Western Zone Zone Boys 10 & under - 50 Y Breast
These rankings show the swimmers' placement within their Zone.They are based on the swimmer's personal best, their current age category, and team; and are calculated from all the meets results.
For each swimmer, you can find the swimmer's ranking, their best time, the corresponding time standard, as well as how much faster the swimmer needs to be to reach the next level. The last columns provide information about the event they achieved this personal best.
Swimmer Rankings
| Ranking | Name | Time | Age | Standard | to Next Standard | Team | Date | Meet | |
|---|---|---|---|---|---|---|---|---|---|
| 101 | Eric Zeng | 41.46 | 9 | A Min | AA: 40.19 (+1.27s | 3.1%) | Canyons Aquatic Club | 12/12/2025 | 2025 CA GWSC Winter Age Group Invitational | |
| 102 | Sinan Ozgur | 41.49 | 10 | A Min | AA: 40.19 (+1.30s | 3.1%) | Pleasanton Seahawks | 02/20/2026 | Pacific Swim SCY C B BB+ Meet Hosted By TERA | |
| 103 | Julian Phillips | 41.51 | 10 | A Min | AA: 40.19 (+1.32s | 3.2%) | Quicksilver Swimming | 03/20/2026 | SCY Spring Age Group Championships | |
| 104 | Devin Song | 41.53 | 9 | A Min | AA: 40.19 (+1.34s | 3.2%) | Rose Bowl Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 105 | Oliver Pearce | 41.55 | 10 | A Min | AA: 40.19 (+1.36s | 3.3%) | Aces Swim Club | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 106 | Ludwik Pawelski | 41.56 | 9 | A Min | AA: 40.19 (+1.37s | 3.3%) | Sparks Piranhas Swim Team | 02/06/2026 | 2026 Valentines Day Age Group Open | |
| 107 | Max Ong | 41.59 | 10 | A Min | AA: 40.19 (+1.40s | 3.4%) | Pacific Swim | 03/06/2026 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 108 | Landon Gura | 41.60 | 10 | A Min | AA: 40.19 (+1.41s | 3.4%) | North Coast Aquatics | 03/06/2026 | 2026 SI 14U AGE GRP CHAMPIONSHIPS | |
| 109 | Adelynn Spurlin | 41.64 | 10 | A Min | AA: 40.19 (+1.45s | 3.5%) | North Jeffco Swim Team | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 110 | Parker Sampson | 41.65 | 10 | A Min | AA: 40.19 (+1.46s | 3.5%) | Denver Swim Academy | 02/27/2026 | 2026 CO CSI SC Age Group Championships | |
| 111 | Andrew Zhao | 41.65 | 9 | A Min | AA: 40.19 (+1.46s | 3.5%) | DeAnza Cupertino Aquatics | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 112 | Elliott Ganancial | 41.66 | 10 | A Min | AA: 40.19 (+1.47s | 3.5%) | Aloha Aquatics Association | 04/18/2026 | 44th Annual Harry Mamizuka Invitational | |
| 113 | Brian Yu | 41.67 | 10 | A Min | AA: 40.19 (+1.48s | 3.6%) | Dare Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 114 | Luka McGrath | 41.69 | 10 | A Min | AA: 40.19 (+1.50s | 3.6%) | Multnomah Athletic Club | 01/23/2026 | 2026 TTSC Winter Qualifier | |
| 115 | Jaezyn Magnaye | 41.74 | 10 | A Min | AA: 40.19 (+1.55s | 3.7%) | Tualatin Hills Swim Club | 05/16/2026 | 2026 John DeRoest Sextathlon Swim Meet | |
| 116 | Yangyang Xu | 41.77 | 10 | A Min | AA: 40.19 (+1.58s | 3.8%) | Pacific Dragons Swim Team | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 117 | Yixuan Zhu | 41.82 | 10 | A Min | AA: 40.19 (+1.63s | 3.9%) | Pleasanton Seahawks | 03/28/2026 | PC CDST SC C B BB+ Meet | |
| 118 | Cameron Day | 41.82 | 10 | A Min | AA: 40.19 (+1.63s | 3.9%) | Mission Viejo Nadadores | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 119 | Walker Lewis | 41.83 | 10 | A Min | AA: 40.19 (+1.64s | 3.9%) | Excel Aquatics | 01/16/2026 | 2026 TYR Mardi Gras Invite | |
| 120 | Eli Lawson | 41.88 | 9 | A Min | AA: 40.19 (+1.69s | 4.0%) | Dolphin Aquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 121 | Koa Tejwani | 41.92 | 9 | A Min | AA: 40.19 (+1.73s | 4.1%) | Jcc Waves | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 122 | Jeffrey Crouse | 41.96 | 10 | A Min | AA: 40.19 (+1.77s | 4.2%) | Livermore AquaCowboys | 07/25/2026 | Zone 2 Summer Championships | |
| 123 | William Yao | 41.98 | 10 | A Min | AA: 40.19 (+1.79s | 4.3%) | Fontana Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 124 | Koa Maday | 41.99 | 10 | A Min | AA: 40.19 (+1.80s | 4.3%) | Kona Aquatics Club | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 125 | David Chen | 42.03 | 10 | A Min | AA: 40.19 (+1.84s | 4.4%) | Tualatin Hills Swim Club | 02/21/2026 | 2026 Arena Short Course 10 U Championships | |
| 126 | Kevin Nguyen | 42.04 | 10 | A Min | AA: 40.19 (+1.85s | 4.4%) | Legacy Aquatics | 03/19/2026 | 2026 Northwest Region AG Champs Approved | |
| 127 | Luke Chai | 42.04 | 9 | A Min | AA: 40.19 (+1.85s | 4.4%) | Pleasanton Seahawks | 07/25/2026 | Zone 2 Summer Championships | |
| 128 | Mark Kiselev | 42.12 | 9 | BB Min | A: 42.09 (+0.03s | 0.1%) | Royal Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 129 | Arthur Shackelton | 42.13 | 10 | BB Min | A: 42.09 (+0.04s | 0.1%) | Lakeridge Swim Team | 02/06/2026 | 2026 Valentines Day Age Group Open | |
| 130 | Kai Kitamori | 42.14 | 10 | BB Min | A: 42.09 (+0.05s | 0.1%) | East Bay Bat Rays | 05/17/2026 | Montclair 14 Under Short Course Pentathlon | |
| 131 | Cheng Dou | 42.17 | 10 | BB Min | A: 42.09 (+0.08s | 0.2%) | Alto Swim Club | 03/20/2026 | SCY Spring Age Group Championships | |
| 132 | Yusen Wang | 42.20 | 9 | BB Min | A: 42.09 (+0.11s | 0.3%) | Irvine Novaquatics | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 133 | Anderson Bradley | 42.21 | 10 | BB Min | A: 42.09 (+0.12s | 0.3%) | Coastal Machine Aquatics Club | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
| 134 | Jason Yin | 42.22 | 9 | BB Min | A: 42.09 (+0.13s | 0.3%) | Unattached | 11/15/2025 | Alto Nov 15 16 Fall Frolic | |
| 135 | Jayden Zhen | 42.22 | 10 | BB Min | A: 42.09 (+0.13s | 0.3%) | Adrienne C Nelson | 02/15/2025 | 2025 OR HS 6a 4 | |
| 136 | Kaizen Toung | 42.24 | 9 | BB Min | A: 42.09 (+0.15s | 0.4%) | Orinda Aquatics | 11/08/2025 | Brentwood Seawolves SCY C B BB+ | |
| 137 | Miles Kavanaugh | 42.25 | 10 | BB Min | A: 42.09 (+0.16s | 0.4%) | University Place Aquatic Club | 07/11/2026 | 2026 PN UPAC Summer Challenge Intr Approved | |
| 138 | Andrew Knol | 42.25 | 10 | BB Min | A: 42.09 (+0.16s | 0.4%) | Pacific Swim | 07/10/2026 | 2026 SI SBA All Ages Last Chance Meet | |
| 139 | Phillippe Choi | 42.27 | 10 | BB Min | A: 42.09 (+0.18s | 0.4%) | Blast Sharks | 12/12/2025 | 2025 CA SCS RAA WAG | |
| 140 | Jake McNair | 42.34 | 9 | BB Min | A: 42.09 (+0.25s | 0.6%) | Bellevue Club Swim Team | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 141 | Lucas Pan | 42.35 | 9 | BB Min | A: 42.09 (+0.26s | 0.6%) | Pacific Swimming Zone | 04/26/2026 | 2026 Pacific Swimming Zone All Star Meet | |
| 142 | Nicholas Mosendz | 42.37 | 10 | BB Min | A: 42.09 (+0.28s | 0.7%) | Santa Clara Swim Club | 07/25/2026 | 2026 DACA SC CBA Meet | |
| 143 | Mason Sovich | 42.41 | 9 | BB Min | A: 42.09 (+0.32s | 0.8%) | Olympic Cascade Aquatics | 03/19/2026 | 2026 NW Region Age Group Champs Approved | |
| 144 | Hawx Hansen | 42.43 | 10 | BB Min | A: 42.09 (+0.34s | 0.8%) | Wasatch Front Fish Market | 12/29/2025 | 60th Kearns Holiday Open Invitational | |
| 145 | Herman Wollman | 42.44 | 10 | BB Min | A: 42.09 (+0.35s | 0.8%) | Gold Medal Swim Club | 02/13/2026 | 34th Annual Lost Dutchman Invitational | |
| 146 | Daniel Nagaoka | 42.44 | 10 | BB Min | A: 42.09 (+0.35s | 0.8%) | Quicksilver Swimming | 03/20/2026 | SCY Spring Age Group Championships | |
| 147 | Leo Ioffe | 42.49 | 10 | BB Min | A: 42.09 (+0.40s | 0.9%) | Santa Clara Swim Club | 02/28/2026 | Swim South Bay | |
| 148 | Charles Sundberg | 42.50 | 10 | BB Min | A: 42.09 (+0.41s | 1.0%) | North Bay Aquatics | 05/17/2026 | Montclair 14 Under Short Course Pentathlon | |
| 149 | Jonathan Nelson | 42.52 | 10 | BB Min | A: 42.09 (+0.43s | 1.0%) | Utah Valley Aquatics | 12/26/2024 | 59th Kearns Holiday Open Invitational | |
| 150 | Leland Tsou | 42.53 | 10 | BB Min | A: 42.09 (+0.44s | 1.0%) | Paseo Aquatics Swim Team | 03/12/2026 | 2026 SCS Spring Age Group Champs @ RMDA Cop | |
Disclaimer: This Website is not affiliated with USA Swimming or any Local Swim Committee. The rankings and times displayed on this website are unofficial and should not be viewed as such. We update our information regularly, but we cannot guarantee that the data is accurate, timely, or complete. The only purpose of this website is entertainment. None of the information here should be used for university admission applications.